diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 469fea8..8b3c47c 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -8,6 +8,7 @@ SET(EXAMPLES-SOURCES
   nfc-mfsetuid
   nfc-poll
   nfc-relay
+  nfc-st25tb
   pn53x-diagnose
   pn53x-sam
   pn53x-tamashell
diff --git a/examples/Makefile.am b/examples/Makefile.am
index d7018ac..089c7c8 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -10,6 +10,7 @@ bin_PROGRAMS = \
 		nfc-mfsetuid \
 		nfc-poll \
 		nfc-relay \
+		nfc-st25tb \
 		pn53x-diagnose \
 		pn53x-sam
 
@@ -63,6 +64,9 @@ nfc_mfsetuid_SOURCES = nfc-mfsetuid.c
 nfc_mfsetuid_LDADD = $(top_builddir)/libnfc/libnfc.la \
 			  $(top_builddir)/utils/libnfcutils.la
 
+nfc_st25tb_SOURCES = nfc-st25tb.c
+nfc_st25tb_LDADD = $(top_builddir)/libnfc/libnfc.la
+
 pn53x_diagnose_SOURCES = pn53x-diagnose.c
 pn53x_diagnose_LDADD = $(top_builddir)/libnfc/libnfc.la \
 		       $(top_builddir)/utils/libnfcutils.la
diff --git a/examples/nfc-st25tb.c b/examples/nfc-st25tb.c
new file mode 100644
index 0000000..8468d17
--- /dev/null
+++ b/examples/nfc-st25tb.c
@@ -0,0 +1,609 @@
+/*-
+ * Free/Libre Near Field Communication (NFC) library
+ *
+ * Libnfc historical contributors:
+ * Copyright (C) 2009      Roel Verdult
+ * Copyright (C) 2009-2013 Romuald Conty
+ * Copyright (C) 2010-2012 Romain Tartière
+ * Copyright (C) 2010-2013 Philippe Teuwen
+ * Copyright (C) 2012-2013 Ludovic Rousseau
+ * See AUTHORS file for a more comprehensive list of contributors.
+ * Additional contributors of this file:
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *  1) Redistributions of source code must retain the above copyright notice,
+ *  this list of conditions and the following disclaimer.
+ *  2 )Redistributions in binary form must reproduce the above copyright
+ *  notice, this list of conditions and the following disclaimer in the
+ *  documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Note that this license only applies on the examples, NFC library itself is under LGPL
+ *
+ */
+
+/**
+ * @file nfc-st25tb.c
+ * @brief Tool to operate on ISO-14443-B ST25TB* and legacy SR* cards
+ */
+
+/*	Benjamin DELPY `gentilkiwi`
+ *	https://blog.gentilkiwi.com
+ *	benjamin@gentilkiwi.com
+ *	Licence : https://creativecommons.org/licenses/by/4.0/
+ *	Rely on : libnfc - https://github.com/nfc-tools/libnfc
+ *	
+ *	$ gcc -Wall -lnfc -o nfc-st25tb nfc-st25tb.c
+ *	$ ./nfc-st25tb -h
+ *
+ * Tested with
+ * - ST25TB512-AC - (BE/Brussels/STIB ; AliExpress ones)
+ * - ST25TB512-AT - (FR/Lille/Ilevia ; FR/Reims/Citura)
+ * - SRT512 - legacy - (FR/Bordeaux/TBM)
+ * - SRI512 - legacy - (anonymous vending machine)
+ */
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif // HAVE_CONFIG_H
+ 
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdbool.h>
+#include <string.h>
+#include <nfc/nfc.h>
+
+#if defined(WIN32) /* mingw compiler */
+#include <getopt.h>
+#endif
+
+#define ST25TB_SR_BLOCK_MAX_SIZE	4 // for static arrays
+typedef void(*get_info_specific) (uint8_t * systemArea);
+
+typedef struct _st_data {
+	uint8_t chipId;
+	bool bIsLegacy;
+	const char *szName;
+	const char *szDatasheetUrl;
+	uint8_t blockSize;
+	uint8_t nbNormalBlock;
+	uint8_t bnSystem;
+	get_info_specific pfnGetInfo;
+} st_data;
+
+bool get_block_at(nfc_device *pnd, uint8_t block, uint8_t *data, uint8_t cbData, bool bPrintIt);
+bool set_block_at(nfc_device *pnd, uint8_t block, uint8_t *data, uint8_t cbData, bool bPrintIt);
+bool set_block_at_confirmed(nfc_device *pnd, uint8_t block, uint8_t *data, uint8_t cbData, bool bPrintIt);
+const st_data * get_info(const nfc_target *pnt, bool bPrintIt);
+void display_system_info(nfc_device *pnd, const st_data * stdata);
+void print_hex(const uint8_t *pbtData, const size_t szBytes);
+
+int main(int argc, char *argv[])
+{
+	nfc_context *context = NULL;
+	nfc_device *pnd = NULL;
+	nfc_target nt = {0};
+	nfc_modulation nm = {NMT_ISO14443B, NBR_106};
+	const st_data * stcurrent;
+	int opt, res;
+	bool bIsBlock = false, bIsRead = false, bIsWrite = false, bIsBadCli = false;
+	uint8_t i, blockNumber = 0, data[ST25TB_SR_BLOCK_MAX_SIZE] = {0xff, 0xff, 0xff, 0xff}; // just in case...
+	size_t cbData = 0;
+	
+	while(!bIsBadCli && ((opt = getopt(argc, argv, ":hib:rw:")) != -1))
+	{
+		switch(opt)
+		{
+			case 'i':
+				
+				break;
+			
+			case 'b':
+				if(optarg)
+				{
+					bIsBlock = true;
+					blockNumber = strtoul(optarg, NULL, 0);
+				}
+				else bIsBadCli = true;
+
+				break;
+
+			case 'r':
+				bIsRead = true;
+				
+				break;
+
+			case 'w':
+					if(optarg)
+					{
+						cbData = strlen(optarg);
+						if((cbData == (2*2)) || ((cbData == (4*2))))
+						{
+							cbData >>= 1;
+							if(cbData == 2) // sr176
+							{
+								res = sscanf(optarg, "%02hhx%02hhx", data, data + 1);
+							}
+							else // all others
+							{
+								res = sscanf(optarg, "%02hhx%02hhx%02hhx%02hhx", data, data + 1, data + 2, data + 3);
+							}
+							
+							if(res == (int) cbData)
+							{
+								bIsWrite = true;
+							}
+						}
+						
+						if(!bIsWrite)
+						{
+							bIsBadCli = true;
+						}
+					}
+				
+				break;
+			
+			default: // includes -h
+				bIsBadCli = true;
+				
+		}
+	}
+	
+	if(!bIsBadCli)
+	{
+		if(bIsBlock && (bIsRead || bIsWrite))
+		{
+			if(bIsRead && bIsWrite)
+			{
+				printf("|mode   : read then write\n");
+			}
+			else if(bIsRead)
+			{
+				printf("|mode   : read\n");
+			}
+			else if(bIsWrite)
+			{
+				printf("|mode   : write\n");
+			}
+			
+			printf("|blk num: 0x%02hhx\n", blockNumber);
+			if(bIsWrite)
+			{
+				printf("|data   : ");
+				print_hex(data, cbData);
+				printf("\n");
+			}
+		}
+		else if(!bIsRead && !bIsWrite && !bIsBlock)
+		{
+			printf("|mode   : info\n");
+		}
+		else bIsBadCli = true;
+	}
+	
+	if(!bIsBadCli)
+	{
+		nfc_init(&context);
+		if(context)
+		{
+			pnd = nfc_open(context, NULL);
+			if(pnd)
+			{
+				res = nfc_initiator_init(pnd);
+				if(res == NFC_SUCCESS)
+				{
+					printf("Reader  : %s - via %s\n  ...wait for card...\n", nfc_device_get_name(pnd), nfc_device_get_connstring(pnd));
+					
+					res = nfc_initiator_list_passive_targets(pnd, nm, &nt, 1);
+					if(res == 0) // we don't really wanted a NMT_ISO14443B
+					{
+						nm.nmt = NMT_ISO14443B2SR; // we want a NMT_ISO14443B2SR, but needed to ask for NMT_ISO14443B before
+						if (nfc_initiator_select_passive_target(pnd, nm, NULL, 0, &nt) > 0)
+						{
+							stcurrent = get_info(&nt, true);
+							if(stcurrent)
+							{
+								printf("\n");
+
+								if(bIsBlock && (bIsRead || bIsWrite))
+								{
+									if(bIsRead)
+									{
+										get_block_at(pnd, blockNumber, NULL, 0, true);
+									}
+									
+									if(bIsWrite)
+									{
+										set_block_at_confirmed(pnd, blockNumber, data, cbData, true);
+									}
+								}
+								else if(!bIsRead && !bIsWrite && !bIsBlock)
+								{
+									for(i = 0; i < stcurrent->nbNormalBlock; i++)
+									{
+										get_block_at(pnd, i, NULL, 0, true);
+									}
+									display_system_info(pnd, stcurrent);
+								}
+							}
+						}
+					}
+					else if(res > 0)
+					{
+						printf("ERROR - We got a NMT_ISO14443B ?\n");
+					}
+					else printf("ERROR - nfc_initiator_list_passive_targets: %i\n", res);
+				}
+				else printf("ERROR - nfc_initiator_init: %i\n", res);
+				
+				nfc_close(pnd);
+			}
+			else printf("ERROR - nfc_open\n");
+			
+			nfc_exit(context);
+		}
+		else printf("ERROR - nfc_init\n");
+	}
+	else
+	{
+		printf(
+			"Usage:\n"
+			"  %s [-i]\n"
+			"  %s -b N -r\n"
+			"  %s -b N [-r] -w ABCD[EF01]\n  %s -h\n"
+			"Options:\n"
+			"  -i               (default) information mode - will try to dump the tag content and display informations\n"
+			"  -b N             specify block number to operate on (tag dependent), needed for read (-r) and write (-w) modes\n"
+			"  -r               read mode - will try to read block (specified with -b N parameter)\n"
+			"  -w ABCD[EF01]    write mode - will try to write specicied data (2 or 4 bytes depending on tag) to block (specified with -b N parameter)\n"
+			"  -h               this help\n"
+			"Examples:\n"
+			"  %s -i\n"
+			"        Display all tag informations\n"
+			"  %s -b 0x0e -r\n"
+			"        Read block 0x0e (14) of the tag\n"
+			"  %s -b 0x0d -w 0123abcd\n"
+			"        Write block 0x0d (13) of the tag with hexadecimal value '01 23 ab cd'\n"
+			"  %s -b 0x0c -r -w 0123abcd\n"
+			"        Read, then write block 0x0c (12) of the tag with hexadecimal value '01 23 ab cd'\n"
+			"Warnings:\n"
+			"  Be careful with: system area, counters & otp, bytes order.\n"
+		, argv[0], argv[0], argv[0], argv[0], argv[0], argv[0], argv[0], argv[0]);
+	}
+	
+	return 0;
+}
+
+bool get_block_at(nfc_device *pnd, uint8_t block, uint8_t *data, uint8_t cbData, bool bPrintIt)
+{
+	bool bRet = false;
+	uint8_t tx[2] = {0x08, block}, rx[ST25TB_SR_BLOCK_MAX_SIZE]; // 4 is the maximum, SR176 (only 2) will fit
+	int res;
+	
+	res = nfc_initiator_transceive_bytes(pnd, tx, sizeof(tx), rx, sizeof(rx), 0);
+	if((res == 2) || (res == 4))
+	{
+		if(data)
+		{
+			if(cbData == res)
+			{
+				memcpy(data, rx, res);
+				bRet = true;
+			}
+			else printf("ERROR - We got %i bytes for a %hhu buffer size?\n", res, cbData);
+		}
+		else bRet = true;
+		
+		if(bPrintIt)
+		{
+			printf("[0x%02hhx] ", block);
+			print_hex(rx, res);
+			printf("\n");
+		}
+	}
+	else if(res > 0)
+	{
+		printf("ERROR - We got %i bytes?\n", res);
+	}
+	else printf("ERROR - nfc_initiator_transceive_bytes(get): %i\n", res);
+	
+	return bRet;
+}
+
+bool set_block_at(nfc_device *pnd, uint8_t block, uint8_t *data, uint8_t cbData, bool bPrintIt)
+{
+	bool bRet = false;
+	uint8_t tx[2 + ST25TB_SR_BLOCK_MAX_SIZE] = {0x09, block}; // 4 is the maximum, SR176 (only 2) will fit
+	int res;
+	
+	if(cbData <= ST25TB_SR_BLOCK_MAX_SIZE)
+	{
+		memcpy(tx + 2, data, cbData);
+		
+		if(bPrintIt)
+		{
+			printf(">0x%02hhx> ", block);
+			print_hex(data, cbData);
+			printf("\n");
+		}
+		
+		res = nfc_initiator_transceive_bytes(pnd, tx, 2 + cbData, NULL, 0, 0);
+		if(res == NFC_ERFTRANS) // ? :')
+		{
+			bRet = true;
+		}
+		else printf("ERROR - nfc_initiator_transceive_bytes(set): %i\n", res);
+	}
+	else printf("ERROR - Wanted to write %hhu bytes, but maximum is %hhu\n", cbData, ST25TB_SR_BLOCK_MAX_SIZE);
+	
+	return bRet;
+}
+
+bool set_block_at_confirmed(nfc_device *pnd, uint8_t block, uint8_t *data, uint8_t cbData, bool bPrintIt)
+{
+	bool bRet = false;
+	uint8_t buffer[ST25TB_SR_BLOCK_MAX_SIZE]; // maximum size will be checked in set_block_at
+	
+	if(set_block_at(pnd, block, data, cbData, bPrintIt))
+	{
+		if(get_block_at(pnd, block, buffer, cbData, bPrintIt))
+		{
+			if(memcmp(data, buffer, cbData) == 0)
+			{
+				bRet = true;
+			}
+			else if(bPrintIt) 
+			{
+				printf("WARNING - not same value readed after write\n");
+			}
+		}
+	}
+	
+	return bRet;
+}
+
+void get_info_st25tb512(uint8_t * systemArea)
+{
+	uint8_t b, i;
+	
+	b = ((*(uint32_t *) systemArea) >> 15) & 1;
+	
+	printf("  | ST reserved  : ");
+	for(i = 0; i < 15; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n  | b15          : %hhu - %sOTP (?)\n  | OTP_Lock_Reg : ", b, b ? "not " : "");
+	for(i = 16; i < 32; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n");
+	for(i = 16; i < 32; i++)
+	{
+		if(!(((*(uint32_t *) systemArea) >> i) & 1))
+		{
+			printf("     block 0x%02hhx is write protected\n", i - 16);
+		}
+	}
+}
+
+void get_info_st25tb2k_4k(uint8_t * systemArea)
+{
+	uint8_t b, i;
+	
+	b = ((*(uint32_t *) systemArea) >> 15) & 1;
+	
+	printf("  | ST reserved  : ");
+	for(i = 0; i < 15; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n  | b15          : %hhu - %sOTP (?)\n  | OTP_Lock_RegU: ", b, b ? "not " : "");
+	for(i = 16; i < 24; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n  | OTP_Lock_Reg : ");
+	for(i = 24; i < 32; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n");
+	if(!(((*(uint32_t *) systemArea) >> 24) & 1))
+	{
+		printf("     blocks 0x07 and 0x08 are write protected\n");
+	}
+	for(i = 25; i < 32; i++)
+	{
+		if(!(((*(uint32_t *) systemArea) >> i) & 1))
+		{
+			printf("     block 0x%02hhx is write protected\n", i - 16);
+		}
+	}
+}
+
+void get_info_sr176_legacy(uint8_t * systemArea)
+{
+	uint8_t i;
+	
+	printf("  | Fixed Chip_ID: 0x%1x\n  | ST reserved  : ", systemArea[0] & 0x0f);
+	for(i = 4; i < 8; i++)
+	{
+		printf("%hhu", ((*(uint16_t *) systemArea) >> i) & 1);
+	}
+	printf("\n  | OTP_Lock_Reg : ");
+	for(i = 8; i < 16; i++)
+	{
+		printf("%hhu", ((*(uint16_t *) systemArea) >> i) & 1);
+	}
+	printf("\n");
+	for(i = 8; i < 16; i++)
+	{
+		if(((*(uint16_t *) systemArea) >> i) & 1)
+		{
+			printf("     blocks 0x%02hhx and 0x%02hhx are write protected\n", (i - 8) * 2, ((i - 8) * 2) + 1);
+		}
+	}
+}
+
+void get_info_sri_srt_512_legacy(uint8_t * systemArea)
+{
+	uint8_t b, i;
+	
+	b = ((*(uint32_t *) systemArea) >> 15) & 1;
+	
+	printf("  | Fixed Chip_ID: 0x%02hhx\n  | ST reserved  : ", systemArea[0]);
+	for(i = 8; i < 15; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n  | b15          : %hhu - %sOTP (?)\n  | OTP_Lock_Reg : ", b, b ? "not " : "");
+	for(i = 16; i < 32; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n");
+	for(i = 16; i < 32; i++)
+	{
+		if(!(((*(uint32_t *) systemArea) >> i) & 1))
+		{
+			printf("     block 0x%02hhx is write protected\n", i - 16);
+		}
+	}
+}
+
+void get_info_sri2k_4k_srix4k_srix512_legacy(uint8_t * systemArea)
+{
+	uint8_t i;
+	
+	printf("  | Fixed Chip_ID: 0x%02hhx\n  | ST reserved  : ", systemArea[0]);
+	for(i = 8; i < 24; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n  | OTP_Lock_Reg : ");
+	for(i = 24; i < 32; i++)
+	{
+		printf("%hhu", ((*(uint32_t *) systemArea) >> i) & 1);
+	}
+	printf("\n");
+	if(!(((*(uint32_t *) systemArea) >> 24) & 1))
+	{
+		printf("     blocks 0x07 and 0x08 are write protected\n");
+	}
+	for(i = 25; i < 32; i++)
+	{
+		if(!(((*(uint32_t *) systemArea) >> i) & 1))
+		{
+			printf("     block 0x%02hhx is write protected\n", i - 16);
+		}
+	}
+}
+
+const st_data STRefs[] = {
+	{0x1b, false, "ST25TB512-AC", "https://www.st.com/resource/en/datasheet/st25tb512-ac.pdf", 4, 16,  255,  get_info_st25tb512},
+	{0x33, false, "ST25TB512-AT", "https://www.st.com/resource/en/datasheet/st25tb512-at.pdf", 4, 16,  255,  get_info_st25tb512},
+	{0x3f, false, "ST25TB02K",    "https://www.st.com/resource/en/datasheet/st25tb02k.pdf",    4, 64,  255,  get_info_st25tb2k_4k},
+	{0x1f, false, "ST25TB04K",    "https://www.st.com/resource/en/datasheet/st25tb04k.pdf",    4, 128, 255,  get_info_st25tb2k_4k},
+};
+const st_data STRefs_legacy[] = {
+	{ 0, true, "SRI4K(s)", NULL,                                                   4, 128, 255, NULL},
+	{ 2, true, "SR176",    "https://www.st.com/resource/en/datasheet/sr176.pdf",   2, 15,  15,  get_info_sr176_legacy},
+	{ 3, true, "SRIX4K",   NULL,                                                   4, 128, 255, get_info_sri2k_4k_srix4k_srix512_legacy},
+	{ 4, true, "SRIX512",  "https://www.st.com/resource/en/datasheet/srix512.pdf", 4, 16,  255, get_info_sri2k_4k_srix4k_srix512_legacy},
+	{ 6, true, "SRI512",   "https://www.st.com/resource/en/datasheet/sri512.pdf",  4, 16,  255, get_info_sri_srt_512_legacy},
+	{ 7, true, "SRI4K",    "https://www.st.com/resource/en/datasheet/sri4k.pdf",   4, 128, 255, get_info_sri2k_4k_srix4k_srix512_legacy},
+	{12, true, "SRT512",   "https://www.st.com/resource/en/datasheet/srt512.pdf",  4, 16,  255, get_info_sri_srt_512_legacy},
+	{15, true, "SRI2K",    "https://www.st.com/resource/en/datasheet/sri2k.pdf",   4, 64,  255, get_info_sri2k_4k_srix4k_srix512_legacy},
+};
+
+const st_data * get_info(const nfc_target *pnt, bool bPrintIt)
+{
+	const st_data *currentData = NULL;
+	const uint8_t *p;
+	uint8_t chipId, i;
+	
+	if(pnt->nm.nmt == NMT_ISO14443B2SR)
+	{
+		printf("Target  : %s (%s)\nUID     : ", str_nfc_modulation_type(pnt->nm.nmt), str_nfc_baud_rate(pnt->nm.nbr));
+		print_hex(pnt->nti.nsi.abtUID, sizeof(pnt->nti.nsi.abtUID));
+		printf("\n");
+		
+		p = pnt->nti.nsi.abtUID;
+		if(p[7] == 0xd0) // ST25TB* / SR*
+		{
+			chipId = p[5];
+			printf("Manuf   : 0x%02hhx - %s\n", p[6], (p[6] == 0x02) ? "STMicroelectronics" : "other");
+			
+			for(i = 0; i < (sizeof(STRefs) / sizeof(STRefs[0])); i++)
+			{
+				if(chipId == STRefs[i].chipId)
+				{
+					currentData = &STRefs[i];
+					break;
+				}
+			}
+			
+			if(!currentData)
+			{
+				chipId >>= 2;
+				for(i = 0; i < (sizeof(STRefs_legacy) / sizeof(STRefs_legacy[0])); i++)
+				{
+					if(chipId == STRefs_legacy[i].chipId)
+					{
+						currentData = &STRefs_legacy[i];
+						break;
+					}
+				}
+			}
+			
+			if(bPrintIt && currentData)
+			{
+				printf("ChipId  : 0x%02hhx - %s%s\nSerial  : 0x", currentData->chipId, currentData->szName, currentData->bIsLegacy ? " (legacy)" : "");
+				if(currentData->bIsLegacy)
+				{
+					printf("%1hhx", p[5] & 0x03);
+				}
+				printf("%02hhx%02hhx%02hhx%02hhx%02hhx\n|blk sz : %hhu bits\n|nb blks: %hhu\n|sys idx: %hhu\n", p[4], p[3], p[2], p[1], p[0], currentData->blockSize * 8, currentData->nbNormalBlock, currentData->bnSystem);
+			}
+		}
+		else printf("WARNI - Last byte of UID isn\'t 0xd0, but 0x%02hhx (not ST25TB / SR series?)\n", p[7]);
+	}
+	else printf("ERROR - not a NMT_ISO14443B2SR ?\n");
+	
+	return currentData;
+}
+
+void display_system_info(nfc_device *pnd, const st_data * stdata)
+{
+	uint8_t systemArea[ST25TB_SR_BLOCK_MAX_SIZE];
+	
+	if(get_block_at(pnd, stdata->bnSystem, systemArea, stdata->blockSize, true))
+	{
+		if(stdata->pfnGetInfo)
+		{
+			stdata->pfnGetInfo(systemArea);
+		}
+	}
+}
+
+void print_hex(const uint8_t *pbtData, const size_t szBytes)
+{
+	size_t szPos;
+	for (szPos = 0; szPos < szBytes; szPos++)
+	{
+		printf("%02hhx ", pbtData[szPos]);
+	}
+}
\ No newline at end of file